 |
| |||
| air pollution load | |||
| концентрация атмосферных загрязнителей: 7 phrases in 3 subjects |
| Ecology | 5 |
| Makarov | 1 |
| Weapons of mass destruction | 1 |
|
| |||
| air pollution load | |||
| концентрация атмосферных загрязнителей: 7 phrases in 3 subjects |
| Ecology | 5 |
| Makarov | 1 |
| Weapons of mass destruction | 1 |